The irony of the first ad I'm shown being a coffee machine with unrecyclable pods to fill it makes me both amused and sad. Sort of sums up the whole problem really.
The pods _are_ recyclable, but whether they actually _get_ recycled is a legitimate concern. In Switzerland and Germany, currently about 50% of used pods are recycled, and this is growing rapidly.
Additionally, Nestle claims that the proportion of recycled aluminium (from all sources, not just used pods) in all manufactured pods now approaches 80%.